Collapsible phonograph-horn.



G. STIPF. GOLLAPS IBLE PHONOGRAPH HORN. APPLICATION FILED OCT. 21, 1911.

1,049, 1 6.6. v Patented Dec.-31, 1912.

LI i a No: My

tially to the joint formed between .sectmns whereby both the inner and the outer side of the horn are practically nrrnn STATES 1 E OFFICE.

GILBERT srrrr, or ovIn, liiiiiCHIGAN.

COLLAPSIBLE PHONOGRAPH-HORIN.

Specification of Letters Patent.

Application filed October 21, 1911. Serial No. 655,965.

To all whomit may concern:

3e it known that I, GILBERT Srrirr, acitizen of the United States, residing at Ovid, in the county of Clinton and State of Michigan, have invented new and useful Improvements in Collapsible Phonograph-Horns of which the following is a specification.

The invention provides a horn designed most especially for sound reproducing inachines of the phonograph type, the purpose being the provision of a horn which will admit of its length being readily reduced so that the horn may be stored in a comparatively small space either for convenience of carying or to be laid aside when not quired for inni'iediate use so as not to be in the way, the invention relating most essenthe horn smooth and continuous.

. The invention consists oi; the novel features, details of construction and combinatipn of parts, which hereinafter will be more particularly forth illustrated in the acromimnying drawing and pointed out in the appended claim.

Referring to the drawing, forming a part oi the specification Figure l is a side View of a horn of the type described embodying the invention, a part. being broken away. Fig. 2 is a sectional View. the parts or horn sections being separated and the dotted lines showing the position of the sectionswhcn ncsted. lii'g. 3 is an enlarged section of the joint Formed between adjacent scclions. Fig. 4 is an enlarged view of apartoi one of the horn sections.

Correspondingand like parts are referred to in the following description, and indicated in all the views of the drawing, by the same reference characters. i

The horn in its general appearance may be of any design such as commonly provided tor sound reproducing machines and may be constructed of any material. V

In order to admit of the length oi the horn being reduced it. is proposed, to form the horn of longitudinal sections which are separable. each of the sections being approximately of trusto-conical form. The

number of the horn sections and the length thereof will depend. upon the size of the horn and the space into which the same is to be packed when the horn is reduced i115 l on gth In accordance with the invention it is preferred to construct the horn of wood or like fibrous material.- The edges or ends of the sections bordering upon or forming the joint are rabbeted or halved so that when the sections are placed together both the inner and the outer walls are smooth and practically continuous,while at the same time the parts of the horn sections formin'g'jthe joints overlap. The horn sections are/ fositively connected by providing the ved ends upon their longitudinal walls or faces with fine screw-threads which match and interlock when the sections are assembled, as indicated most clearly in Figs. 1 and 3. The end or edge portions of the horn sections are susceptible to contraction or ex. pansion or to injury, which ordinarily would prevent assembling the sections. This difi'iculty is overcome by reinforcing the ends or edge po rt-i-ons of the horn sections; the reinforcement bein in the nature of a metal binding 1, whici embraces opposite sides of thesecti'on and extends over the end thereof, The reinforcement 1 consists of inner and outer tapered elements 1* and l and a connecting part 1- joining the outer ends of the elements 1" andl". One of such elements is threaded to, engageunatching serewthreads. on the mating element ofthe adjacent horn section. The smaller ends of the horn sections are rabbeted on the outer sides and the larger ends are rabbeted onfthe inner sides. The outer-elements of the; e

inforcements fitted to the smaller ends f thev end of the'horn section also serves to, give a finished appearance thereto and pro ventsinjury to the end of the section.

, Patented Dec. 31,191av When the sections comprising the horn are assembled as indicated in Fig. 1, both the inner and the outer walls are practically smooth and continuous. Vvhenthe sections are separatedthey may be nested as indicated by the dotted lines in Fig. 2, to admit,

of their occupying a small space or being packed into a case for convenience of carrying.

. From the foregoing description,taken in connection with the accompanying drawing,

the advantagesp t the gonstruotion and. of the method of operation will be readily an. parent to those skilled 1-11 the art to xyghion the invention appertains and while I have described the principle of operation of the invention, together With the device which I noW consider'to be the embodiment thereof.

I desirejto have it understood that the de y yice shown is merely illustrative, and that such changes may he. made hen desired'asare within the scope-of theclaim appended hereto.

I Having thus'desoribed the invention what 1S claimed as new, is

A collapsible horn for phonographs comprising a plurality of separable sections of similar formation each of said section's being of tapering form and having its ends rabhetecL-the smaller end having the rahbet on the outside andfhe larger end having the rabbet on the inside, and a metal reinforce- -11'16I1t fitted to each rabbeted end and con 

